ATtiny44 datasheet(104/236 Pages) ATMEL

Nome de Peças	ATtiny44

Descrição Electrónicos	8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

PDF	236 Pages

Scroll/Zoom	100%

Fabricante Electrônico	ATMEL [ATMEL Corporation]

Página de início	http://www.atmel.com

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104 / 236 page

104

8006H–AVR–10/09

ATtiny24/44/84

Figure 12-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f

clk_I/O/8)

Figure 12-12 on page 104 shows the count sequence close to TOP in various modes. When

using phase and frequency correct PWM mode the OCR1x Register is updated at BOTTOM.

The timing diagrams will be the same, but TOP should be replaced by BOTTOM, TOP-1 by

BOTTOM+1 and so on. The same renaming applies for modes that set the TOV1 flag at

BOTTOM.

Figure 12-12. Timer/Counter Timing Diagram, no Prescaling

Figure 12-13 on page 105 shows the same timing data, but with the prescaler enabled.

OCFnx

OCRnx

TCNTn

OCRnx Value

OCRnx - 1

OCRnx

OCRnx + 1

OCRnx + 2

clk

I/O

clk

(clk

I/O/8)

TOVn (FPWM)

and ICFn (if used

as TOP)

OCRnx

(Update at TOP)

TCNTn

(CTC and FPWM)

TCNTn

(PC and PFC PWM)

TOP - 1

TOP

TOP - 1

TOP - 2

Old OCRnx Value

New OCRnx Value

TOP - 1

TOP

BOTTOM

BOTTOM + 1

clk

(clk

I/O/1)

clk

I/O

ATtiny44 Folha de dados(PDF) 104 Page - ATMEL Corporation

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